Develop Reference

Repeated ProgressBar activity for set of tasks in Android

I am new to android, don't have much experience to manage threads. I am working on an activity where I want to display progress bar for say 5 seconds and then repeat. During those 5 seconds, I will display some text for the user to work on the text. I want to repeat this for say N times.
Currently, I have the following code that works for 1 such progress. I tried looping it but it didn't help, as threads executed at same time. How can I repeat this for N number of times? Am I on the correct path in order to solve my the problem?
public class test extends Activity {
private ProgressBar progressBar;
private int progressStatus = 0;
private TextView textView;
private Handler handler = new Handler();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_loop);
progressBar = (ProgressBar) findViewById(R.id.progressBar1);
textView = (TextView) findViewById(R.id.textView1);
progressBar.setScaleY(3f);
// Start long running operation in a background thread
for(int i=0; i<5; i++)
Progress();
}
public void Progress(){
new Thread(new Runnable() {
public void run() {
while (progressStatus < 100) {
progressStatus += 1;
// Update the progress bar and display the
//current value in the text view
handler.post(new Runnable() {
public void run() {
progressBar.setProgress(progressStatus);
textView.setText(progressStatus+"/"+progressBar.getMax());
}
});
try {
// Sleep for 200 milliseconds.
//Just to display the progress slowly
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}).start();
}
}

I am not sure I would recommend using the pattern you are following but here is the way to get the threads to run one after another rather than all at the same time:
public void progress(final int numberOfRuns) {
if (numberOfRuns <= 0 ) {
return;
}
new Thread(new Runnable() {
public void run() {
while (progressStatus < 100) {
progressStatus += 1;
// Update the progress bar and display the
//current value in the text view
handler.post(new Runnable() {
public void run() {
progressBar.setProgress(progressStatus);
textView.setText(progressStatus + "/" + progressBar.getMax());
// For the UI Changes. Eg update the loop number
myTextView.setText(Integer.toString(totalLoop));
}
});
try {
// Sleep for 200 milliseconds.
//Just to display the progress slowly
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
progressStatus = 0;
totalLoop = totalLoop+1;
progress(numberOfRuns - 1);
}
}).start();
}
then just call progress(numberOfRuns), no need for any loops.

Android Pause and Resume Background Activity

In one activity of my app, there are an imagview and a textview that are changing every 3 seconds.
I first set this up with a handler and thread runnable. It works fine, but when I use removeCallbacks with the pause button, it will not pause in the middle of the Thread. It completes the Thread runnable before pausing. I need it to pause when the button is clicked no matter where it is in the runnable.
I thought about using an asynctask but I'm not sure how this would work.
I know there has to be a way to do this, as you can pause almost any game you download. Does anyone have any suggestions on the best/easiest way to do this?
Thanks so much!! :)
public class Workout extends AppCompatActivity {
private String[] messages = {"1", "2", "3", "4", "5"};
final Handler handler = new Handler();
private int nextIndex;
String mDrawableName[] = {"bodypart70", "equipment70", "settings70", "time70", "bodypart70"};
private int nextImage;
ImageView image;
private ProgressBar progressBar;
private int progressStatus = 0;
Runnable r = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.workout);
image = (ImageView) findViewById(R.id.exerciseImage);
final TextView text = (TextView)findViewById(R.id.textView4);
progressBar = (ProgressBar) findViewById(R.id.progressBar1);
//changing
r = new Runnable(){
#Override
public void run(){
if (messages.length > nextIndex) {
//change textview
text.setText(messages[nextIndex++]);
//change image
int resID = getResources().getIdentifier(mDrawableName[nextImage++] , "drawable", getPackageName());
image.setImageResource(resID);
//restart progress bar
progressStatus = 0;
progress();
//do it after 3 seconds
handler.postDelayed(this, 3000);
}
}
};
handler.postDelayed(r, 0);
}
public void progress(){
new Thread(new Runnable() {
public void run() {
long timerEnd = System.currentTimeMillis() + 3 * 1000;
while (timerEnd > System.currentTimeMillis()) {
progressStatus = 3 - (int) (timerEnd - System.currentTimeMillis()) / 1000;
// Update the progress bar
handler.post(new Runnable() {
public void run() {
progressBar.setProgress(progressStatus);
}
});
try {
Thread.sleep(10);
} catch (InterruptedException e) {
Log.w("App", "Progress thread cannot sleep");
}
}
}
}).start();
}
public void pauseWorkout(View view){
handler.removeCallbacks(r);
}
public void resumeWorkout(View view){
handler.postDelayed(r, 0);
}
}

It looks like the while-loop in your progress() function is still working after you press your pause button.
Try the following: Create a global boolean that indicates you're in a paused or resuming state. Put it at the top of your code:
boolean resume = true;
Update your while condition in progress()
while (resume && timerEnd > System.currentTimeMillis()) {
Update your workout functions:
public void pauseWorkout(View view){
handler.removeCallbacks(r);
resume = false;
}
public void resumeWorkout(View view){
handler.postDelayed(r, 0);
resume = true;
}

how to design view like Progress bar which is fix in android?

I have to design my view like this
Please help me how to design this in android
Thanks in advance...

To add a Button:
Open “res/layout/main.xml” file, just add normal button for demonstration.
File : res/layout/main.xml
<?xml version="1.0" encoding="utf-8"?>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Button
android:id="#+id/btnStartProgress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Download File" />
</LinearLayout>
2.Code
The key to use progress bar is using “Thread” to run your time consume task and another “Thread” to update the progress bar status accordingly. Read the code’s comment, it should be self-explanatory.
File : MyAndroidAppActivity.java
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.os.Handler;
import android.widget.Button;
import android.view.View;
import android.view.View.OnClickListener;
public class MyAndroidAppActivity extends Activity {
Button btnStartProgress;
ProgressDialog progressBar;
private int progressBarStatus = 0;
private Handler progressBarHandler = new Handler();
private long fileSize = 0;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
addListenerOnButton();
}
public void addListenerOnButton() {
btnStartProgress = (Button) findViewById(R.id.btnStartProgress);
btnStartProgress.setOnClickListener(
new OnClickListener() {
#Override
public void onClick(View v) {
// prepare for a progress bar dialog
progressBar = new ProgressDialog(v.getContext());
progressBar.setCancelable(true);
progressBar.setMessage("File downloading ...");
progressBar.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
progressBar.setProgress(0);
progressBar.setMax(100);
progressBar.show();
//reset progress bar status
progressBarStatus = 0;
//reset filesize
fileSize = 0;
new Thread(new Runnable() {
public void run() {
while (progressBarStatus < 100) {
// process some tasks
progressBarStatus = doSomeTasks();
// your computer is too fast, sleep 1 second
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
// Update the progress bar
progressBarHandler.post(new Runnable() {
public void run() {
progressBar.setProgress(progressBarStatus);
}
});
}
// ok, file is downloaded,
if (progressBarStatus >= 100) {
// sleep 2 seconds, so that you can see the 100%
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
// close the progress bar dialog
progressBar.dismiss();
}
}
}).start();
}
});
}
// file download simulator... a really simple
public int doSomeTasks() {
while (fileSize <= 1000000) {
fileSize++;
if (fileSize == 100000) {
return 10;
} else if (fileSize == 200000) {
return 20;
} else if (fileSize == 300000) {
return 30;
}
// ...add your own
}
return 100;
}
}

Android: launch progressbar in start of application

I have the code bellow when I click button it display a progress bar dialog.
public class MyAndroidAppActivity extends Activity {
Button btnStartProgress;
ProgressDialog progressBar;
private int progressBarStatus = 0;
private Handler progressBarHandler = new Handler();
private long fileSize = 0;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
addListenerOnButton();
}
public void addListenerOnButton() {
btnStartProgress = (Button) findViewById(R.id.btnStartProgress);
btnStartProgress.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// prepare for a progress bar dialog
progressBar = new ProgressDialog(v.getContext());
progressBar.setCancelable(true);
progressBar.setMessage("File downloading ...");
progressBar.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
progressBar.setProgress(0);
progressBar.setMax(100);
progressBar.show();
//reset progress bar status
progressBarStatus = 0;
new Thread(new Runnable() {
public void run() {
while (progressBarStatus < 100) {
// process some tasks
progressBarStatus = doSomeTasks();
// your computer is too fast, sleep 1 second
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
// Update the progress bar
progressBarHandler.post(new Runnable() {
public void run() {
progressBar.setProgress(progressBarStatus);
}
});
}
if (progressBarStatus >= 100) {
// sleep 2 seconds, so that you can see the 100%
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
// close the progress bar dialog
progressBar.dismiss();
}
}
}).start();
}
});
}
// file download simulator... a really simple
public int doSomeTasks() {
Intent intent = new Intent(MyAndroidAppActivity.this, Accueil.class);
startActivity(intent);
}
}
But I want to display it(progress bar dialog) in start of my android application.
How can I do this ? Thanks in advance for any help.

start new activity on progressbar 100%

I use this Tutorial to create custom Progressbar and it works .
But I want to start new activity when progress bar go to 100% .
anyone can help to put start new activity code in correct place?

You can check if the progress has reached the maximum possible while you're setting it, like this:
#Override
public synchronized void setProgress(int progress) {
super.setProgress(progress);
// the setProgress super will not change the details of the progress bar
// anymore so we need to force an update to redraw the progress bar
invalidate();
if(progress >= getMax()) {
Intent intent....
}
}

You can call the onContinue function timer thread and set the intent to next activity and register the activity name in manifest file.
#Override
public void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.progress);
mProgressBar = (ProgressBar)findViewById(R.id.adprogress_progressBar);
final Thread timerThread = new Thread() {
#Override
public void run() {
mbActive = true;
try {
int waited = 0;
while(mbActive && (waited < TIMER_RUNTIME)) {
sleep(200);
if(mbActive) {
waited += 200;
updateProgress(waited);
}
}
} catch(InterruptedException e) {
} finally {
onContinue();
}
}
};
timerThread.start();
}
#Override
public void onDestroy() {
super.onDestroy();
}
public void updateProgress(final int timePassed) {
if(null != mProgressBar) {
final int progress = mProgressBar.getMax() * timePassed / TIMER_RUNTIME;
mProgressBar.setProgress(progress);
}
}
public void onContinue() {
Intent intd=new Intent(this,MainActivity.class);
startActivity(intd);
}

Try this...
new Thread(new Runnable() {
public void run() {
while (progressStatus < 100) {
progressStatus += 5;
// Update the progress bar and display the current value in the text view
handler.post(new Runnable() {
public void run() {
progressBar.setProgress(progressStatus);
textView.setText("Loading "+progressStatus+"/"+progressBar.getMax());
}
});
try {
// Sleep for 200 milliseconds. Just to display the progress slowly
Thread.sleep(200);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
**Intent intent = new Intent(Main_Activity.this, Send_Email.class);
startActivity(intent);**
}
}).start();